Department of Public Expenditure, Infrastructure, Public Service Reform and Digitalisation

I would like copies of correspondence between the Taoiseach's Office and the Department of Public Expenditure and Reform and Department of Finance relating to the Strategic Communications Unit? I would like any correspondence to the Department of Public Expenditure and Reform and Department of Finance seeking funding for the Strategic Communications Unit? I would also like copies of all costing relating to the Strategic Communications Unit. I would also like all copies of correspondence between the department and John Concannon relating to the Strategic Communications unit.